The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2006
Filed:
May. 02, 2003
Koji Yamaguchi, Kyoto, JP;
Mitsuhide Nogami, Kyoto, JP;
Yasuo Yamabe, Shiga, JP;
Masanori Nakamura, Kyoto, JP;
Katsuo Matsuzaka, Kyoto, JP;
Takehiro Yamada, Kyoto, JP;
Satoshi Koma, Shiga, JP;
Kenji Mizukawa, Shiga, JP;
Hideki Sakakihara, Shiga, JP;
Toshihide Nonaka, Shiga, JP;
Koji Yamaguchi, Kyoto, JP;
Mitsuhide Nogami, Kyoto, JP;
Yasuo Yamabe, Shiga, JP;
Masanori Nakamura, Kyoto, JP;
Katsuo Matsuzaka, Kyoto, JP;
Takehiro Yamada, Kyoto, JP;
Satoshi Koma, Shiga, JP;
Kenji Mizukawa, Shiga, JP;
Hideki Sakakihara, Shiga, JP;
Toshihide Nonaka, Shiga, JP;
Sekisui Chemical Co., Ltd., Osaka, JP;
Abstract
A high-pressure composite pipe includes a pipe-shaped inner layer made of a synthetic resin, and a reinforcing layer made of a stretched polyolefin resin sheet and wound on an external circumferential surface of the inner layer, with a winding direction of the reinforcing layer being oriented at a predetermined angle relative to an axis of the pipe, and a method for joining high-pressure composite pipes each including a pipe-shaped inner layer made of a synthetic resin, a reinforcing layer made of a stretched polyolefin resin sheet and wound on an external circumferential surface of the inner layer, and an outer layer made of a synthetic resin and laminated on the reinforcing layer. A method for joining high-pressure composite pipes includes the steps of: heating and melting an end of each high-pressure composite pipe, flaring the melted end of each high-pressure composite pipe, with a diameter thereof gradually enlarging toward an end face thereof, and butting the flared ends of both flared high-pressure composite pipes together and fusing internal circumferential surfaces of their inner layers, with their reinforcing layers being turned outwardly.